Limited to 20,000 lbs. per axle max. All other loads, over legal gross weight, must travel center lane of bridge. Loads over 20,000 lbs. per axle must use alternate route. ALTERNATE ROUTE: From Clark (360-397-2446)/Cowlitz Co (360) 577-3030, Permits available 7:45AM to 5:15PM, Mon-Thurs, Closed Fridays, for gross weight up to 197,000lbs.